Traffic safety evaluation method of signal control intersection

Abstract

The invention relates to a traffic safety evaluation method of a signal control intersection. A whole cycle danger degree index is adopted as a safety evaluation criterion of the signal control intersection, and danger degree indexes of a green light phase period and a green light interval period are integrated so that the whole cycle danger degree index of the signal control intersection to be evaluated is obtained. The traffic safety evaluation method of the signal control intersection aims at the signal control intersection in a planning and designing stage to conduct a whole cycle traffic safety evaluation so that the precision, comprehensiveness and convenience of the traffic safety evaluation of the signal control intersection are enhanced, and a traffic safety pre-evaluation before the formal construction and operation management of the signal control intersection is realized.

Description

technical field [0001] The invention relates to a traffic safety evaluation method of a signal-controlled intersection. Background technique [0002] At present, the safety evaluation methods commonly used in the transportation field are mainly divided into two categories: direct evaluation methods and indirect evaluation methods. The direct evaluation method is based on the statistical analysis of actual accident data, which has high accuracy and rationality; however, due to its long evaluation cycle, it is greatly affected by the randomness, non-reproducibility and unobservability of traffic accidents. Moreover, the difference in statistical observation methods will also affect the accuracy of accident observation. The indirect evaluation method is the evaluation method of traffic conflict technology. At present, conflict-based traffic safety evaluation is mainly used to compare the traffic safety of different types of intersections, compare the safety of intersections w...

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Problems solved by technology

[0003] However, most of the existing evaluation methods for traffic conflict technology are oriented to the intersection operation stage, that is, they must be based on a large amount of conflict observation data, and cannot directly evaluate traffic safety in the planning and design stage; Run the scenario at the mouth, obtain the data required for evaluation and complete the evaluation

However, the time and capital investment required for simulation are relatively large, which is not economical and convenient.

In addition, the current technical evaluation method of traffic conflict cannot quantitatively evaluate the traffic conflict during the green light interval, and does not integrate the traffic conflict index during the green light phase, so it cannot realize the full-cycle traffic safety evaluation of the signal control intersection operation

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